no computers - Strategy for 2x3 Sliding Puzzle - Puzzling Stack Exchange
Sliding puzzle - Wikipedia
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GitHub - mustang519/SLIDING-PUZZLE-SOLVER: A CPP based solver of the game SLIDING PUZZLE using Breadth First Search , A* and Iterative Deepening A* algorithms.
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A fool-proof guide to solving every solvable sliding block puzzle, ever. - Sliding-Block Puzzles - Giant Bomb